Clouds disappearing and fog snapping in

[flightyler]

When I descend through a overcast layer into fog the clouds disappear the visibility improves and then the fog snaps in.

[sundog]

That's pretty weird. What is your cloud draw area set to? Increasing it may help.

[flightyler]

Slider is maxed out

[Daikan]

IMO this is a long known X-Plane limitation / bug.

Here's a video showing what happens using vanilla X-Plane 11.51 and weather manually set to RVR 1200m and overcast cumulus bottoms at 2000ft MSL while transitioning from the ground at 1200ft MSL into the cloud layer (looking straight down in this case):

Here's the same movement using a different perspective (looking slightly downward):

You can see how visibility temporarily "snaps" from foggy to a complete whiteout followed by a sudden change to perfect ground visibility shortly before entering the actual cloud layer.

This example is more drastic due to the very low visibility chosen but I think it's the same effect.

[benjaprud]

I use the X-visibility FlyWithLua plugin to mitigate the whiteout issue. I'm not sure if that would improve on OP's issue though.

[FlyAgi]

SMP is not affected by the XP white-out effect but has its own logic for this when using certain types of clouds (volumetric clouds and procedural overcast clouds).